Some questions about calibration

Projects LimeSDR
1

Hello everyone,

I have some questions about using the calibration result in Gnuradio.

We did the calibration manually in LimeSuiteGUI, but when running Gnuradio, it seems that gnuradio uses another set of calibration values. We’d like to ask whether the latter one is automatically produced or stored in some database, and how do we configure it to choose which value we will use during the flow graph running.

We didn’t find the place to configure in Osmocom Sink. Should we do something with SoapySDRUtil?

Here’s some photos, Gnuradio is running with different values set in LimeSuiteGUI, and we have already chosen Cache calibration values in LimeSuiteGUI

A4C37DD2-635C-42EE-9F8A-8867D9ED9657-4411-0000063DFB0B051C_tmp
A4C37DD2-635C-42EE-9F8A-8867D9ED9657-4411-0000063DFB0B051C_tmp.JPG1280×960 96 KB

EE002657-5894-411A-BDD9-CDE1461B2713-4411-0000063E0048C12A_tmp
EE002657-5894-411A-BDD9-CDE1461B2713-4411-0000063E0048C12A_tmp.JPG1280×960 96 KB

2 Likes
2

Hallo …
AT FIRST: ALL THE BEST FOR 2018…

i have the same problem here …
I want to try to re calibrate the TX PATH with the GNURADIO osmocom-sink…but no solution found until now.

ANY IDEAS how to SOLVE?

Regards Michael DG0OPK

3

Calibration value caching should not be used any more and IIRC by default it is now disabled. The MCU will perform calibration on-the-fly and the old mechanism which persisted values to a database on the host is likely to be removed at some point in the not too distant future.